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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:83AA GHM

Order: 18

Horizontal side: 83 Vertical side: 83

Elements: 1√2, 12, 11√2, 17, 20, 21, 22, 23, 17√2, 20√2, 29, 21√2, 30, 32, 23√2, 40, 42, 30√2.

Code: 305 0 53 304 30 53 293 60 54 232 83 60 231 83 83 403 83 20 10 31 54 121 43 54 172 60 37 171 60 54 327 0 53 110 32 53 216 0 21 425 21 0 221 43 42 215 0 0 204 63 0 203 83 0

The properties below may precede order:side in a tiling's title:

Credit for Discovery

Just three people are credited with the discovery of Primitive Perfects:

Geoffrey H. Morley (GHM, England)

Jasper D. Skinner, II (JDS, United States)

William T. Tutte (WTT, Canada, 1917-2002) (15:44AI, 17:136AJ and 19:56AJ only)

30
30√2
29
23√2
23
40
1√2
12
17√2
17
32
11√2
21√2
42
22
21
20√2
20